I think, there are several reasons why the visitors customer stop this order but it's my ideas and it's possible to have other
The site does not load fast enough
The site's design is neither ergonomic nor professional
Navigation is difficult
No content inside the product description
Site not secure for the customer

Hi Alice,
Do you look the header tag module on the marketplace? Maybe you will find what you look.
Else, the best approach is to create an header tag module. Like that the integration will be better and you can choose where you want to display without to change anything.
Look some header tags files, you will see how to proceed.